How to Choose Forklift Mast Height, Free Lift and Overall Lowered Height
Avoid doorway, container and rack-clearance mistakes when specifying a forklift mast.
Specify the required fork height, the lowest overhead clearance, the truck's lowered mast height and whether full free lift is needed. Mast height alone is not enough.
Measure rack and load
Record the highest beam, pallet height and safe placement clearance.
Check overhead constraints
Doorways, mezzanines, trailers and containers can limit lowered mast height.
Understand free lift
Free lift helps when raising forks before the mast extends, but the exact benefit depends on mast design.
Verify residual capacity
Higher masts often reduce capacity at height. Request a model-specific residual-capacity chart.
Frequently asked questions
Is a 6 m mast always triplex?
Often, but not universally. Confirm mast stages, lowered height and free lift.
Can mast height be changed later?
It can be technically possible but may be expensive and requires manufacturer approval, capacity re-rating and new documentation.
Editorial method
This guide separates source-backed fields, generally accepted selection practice and quotation-dependent data. It does not claim that every option applies to every model. Final decisions require the approved datasheet, local rules and a workplace assessment.
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